Engine-governor.



B. G. KRAMER.

ENGINE GOVERNOR.

APPLICATION EILED JUNE 20, 1913. RENEWED APR. 11, 1914.

Patented Feb. 9

2 SHEETS-SHEET 1.

wwseax i B. G. KRAMER.

* ENGINE GOVERNOR. W

APPLICATION FILED JUNE 20, 1913. RENEWED APR. 17, 1914.

Patented Feb. 9, 1915.

2 SHEETS-SHEET 2.

v aw A T w H H EMF Mg I "E BENJAMIN o. KRAMER, or MILWAUKEE, WISCONSIN.

' ENGINE-GOVERNOR.

Specification of Letters Patent.

1 Patented Feb. 9,1915.

Application filed June 20, 1913, Serial No. 774,733. Renewed April 17', 1914. Serial No. 882,580.

' To all whom it may concern:

Be it known that I, BENJAMIN G. KRAMER, a citizen of the United States, and resident of Milwaukee, inthe county of Milwaukee and State of Wisconsin, have invented certain new and useful Improvements in Engine-Governors, of which the following is a specification.

My invention relates to governors and has particular reference to a novel use on hydro-carbon engines.

A form of governor somewhat similar principle to that herein disclosed was first shown and described in my co-pending application, Serial No. 675,208, filed Feb. 3,

governor for The present invention relates to a modifi cation in the specific construction thereof and broadly claimed therein.

An'object in the construction of a governor of this type is to adapt the same for use on commercial trucks, many of which are operated by unskilled and careless drivers,

whereby to prevent improper operation in.

the matter of speed, and further, to prevent racing of the engine at any time.

In both applications the primary governing device is a disk mounted for reciprocation within a flared conduit through which the air or combustion mixture must pass. In both cases the disk is connected to a throttle. In both cases, means are provided for control of the throttle only within the limit permitted by the governing device. In this application the throttle may be positively closed by manual means while in the earlier application the throttle was permitted to close by reducing the tension on a spring. Further, in this application I have claimed a construction wherein the extent of opening or closing of the throttle valve is in proportion to the extent of increase or reduction of the area of the flared conduit by the movable disk.

' I am aware that many governors have been suggested with the object in view of securing these advantages, most thereof re a governor-on a stationary engine in such manner that thespeed of the engine is con stant. However, in the operation of com:

mercial trucks the load varies between the widest possible limits. overcoming a, steep grade or passing through For instance,

sand or mud the engine maybe taxed to its charge is communicated instantly to the throttle and the required adjustment made.

All of this should be automatic and preferably entirely out of the control of the operator.- I have also discovered, as disclosed in my co-pending application heretofore referred to, that the governing effect is secured to a degree by the employment of a tapered conduit within which a vertically movable disk or plate is mounted, this disk working against a suitable spring and being directly connected to the controlling throttle. By employing a tapered conduit the degree of force appliedv to the governing plunger: is changed somewhat as said plunger moves into the more restricted portion of the conduit. I have found in addition, however, by extended experimentsthat the orifice controlled by the throttle should likewise be of such shape that the throttle covers or uncovers said opening proportionately to the extent of variation in the cross-sectional area of the conduit within which the governing plunger operates. I have found that the ordinary butterfly throttle does not operate in a highly deslr-' tional to the taper .of the conduit Within which the disk reciprocates, it will operate successfully.

Therefore one of the principal objects of my invention is to combine with a tapered conduit having a governing disk mounted therein, a throttle valve directly connected to said governing plunger, said throttle valve controlling an o emng which shall he graduated in size or e eetive area of opening in accordance with the degree of reductionof the tapered conduit within which the stood by reference to the accompanying 25 I drawings, wherein,

Figure lis a side elevation with the outer cap. removed;. Fig. 2 is a vertical section,

.through the construction shown in' Fig. 1;

Fig. 3 is a partially vertical section taken at'ri ht angles to that of Fig. 2'; Fig. 1 is adetai of the "throttle control showing the overning disk, and, Fig; '5 is an enlarged ace view of the sleeve in which the intake opening is formed.

Referring more particularly to the draw ings it will beunder'stood that my governing device is applied in the intake manifold of a hydro-carbon engine, the usual carburetor being secured to the bottom flange of the easing and the flanged manifold secured to the top, portion of the casing. In the preferred construction the casing 10, is provided with a vertical conduit 11, this conduit openinginto an'enlargement 12, in a different plane from'that of the conduit 11.. The conduit 12 has considerably greater cross sectional area than the conduit 11, the former communicating with a tapered conduit 13, formed in a separable portion 14, of the casing. The space 13 communicates with the engine manifold. It is tobe noted that the shape of the space 13 has an important bearing on the operation of my governor. The space is circular in cross section, the cross sectional area becoming less toward the upper portion 'of the space whereby a tapered conduit is formed. Within this tapered conduit a governing disk 15, is mounted thedisk being provided with an apertured hub 16, which cooperates with a pin or rod17, secured'to a cross piece 18,'by' means of'a nut 19. Thus the disk is centered with respect to the con- 'duit but is permitted vertical movement therein under the action of the incoming chargeof-carbureted air. It will under? stood that as the speed of the engine invcreases, the vacuum'above the disk 15 is greater the pressure outside tending to force the disk proper upward within the com tracted portion of the conduit 13. The hub 16 1s provided with a lug to which a link 20, is secured, this link being connected to a' lever 21, which isrigidly secured to a transverse shaft 22. This shaft has a bearing at one end in the casing 10, and at the other end in a removable portion 23, which, when inplace, forms a wall of the casing. As shown, the shaft has ball bearings 24, thus insuring an extremely delicateioperation.

Also secured to the shaft 22, is the throttle valve 25, constructed in the form of a, segment, as best shown in Figs. 2, 3' and 4, the outer surface thereof'being truly circular, the circle being formed from the center of the shaft 22. This valve operates against a wearing sleeve 26, fitted within the circular opening. in the casing and provided with openings 27, 28 therethrough. The openlledby the valve 25, in Fig, .2, the opening being unobstructed by the. valve, that is, the valve is fully opened, the, disk 15 being in its lowermost position. An

ing 27 is oontro importantfeature in connection with the valve 25, is in the shape of the opening 27, in

the sleeve 26. It will be seen that'thislopemmg is triangular in outline. Thebase of the triangle which corresponds to the widest polnt 1n the opening is a straight line,

whereas the two sides leading from the-base to the apex of the triangle are curved or concave. The shapeof the opening and hence the extent of uncovering of the intake passage is arrangedt'o correspond to the extent of contraction of'the conduit '13. It has been found in practice thatby the use. of many of the known forms of throttle valves on a sudden acceleration in the speed of the engine' the disk is drawn upwardly to an extent whereby the valve is completely closed; that is, .the valve opening is not graduated to correspond to the movement of the disk under the vacuum above the disk. By thepresent construction the throttle opening is closed or opened inthe same ratio that the-conduit 13 is restricted by the disk 15. Also secured to a projecting end of .the shaft-22, by means of a core '28, and a-pin' 29, is a coiled spring '30, the outer end of the spring being secured to a regulatinghand nut, 31, held in place by a ring 32, which ring is provided with notches 33 as best shown in Fig. 1.

Mounted having a'projection 35, which cooperates with one of the notches 33, in thering 32.

and the tension of the spring maintained as desired. The spring isarranged whereby its tendency is to' open the throttle valve to the position shown in Fig. 2. However, the

within a transverse recess in the hand nut 31 is a spring-pressed plunger 34,

By this means the hand nut is held in place suction effect of the engine on the disk 15, overcomes the force of the spring'to a certain extent closing the valve and governing the speed of the engine.

It will be seen that by moving'the hand 'nut to right or left the tension of the spring is controlled and therefor the speed at which the engine may operate. It is desirable in the application of this device to trucks or similar commercial vehicles that the speed at which the vehicle may be operated should.

be controlled by the owner in order to prevent fast driving or the racing of the engine and is locked in place. This prevents the rotation of the cap and therefore prevents tampering with the adjustment of the governor.

In order that the engine may he throttled at as low a speed as desired without reference to the governor, I provide a lever 40, secured to a shaft 41, the lever coiiperating with an anti-friction roller 42, on an arm 43, securely fastened to the shaft 22. An end of the shaft 41 projects outside of the casing and permits the connection thereto of a throttle lever 44, to which may be connected the usual rods communicating with the steering post of the vehicle. By this means it will be seen that while the operator may throttle the engine to as low a point as desired, he cannot open the throttle beyond the point permitted by the governor and that nevertheless the engine is enabled at all times to deliver its full powerinasmuch as whenever the speed of the engine falls below a certain point the throttle will be opened by the action of the spring 35.

The shape of the conduit 13 and the shape of the opening 27 in the sleeve 26 may be varied as desired in order to secure fine or coarse governing action. In the construction shown the governing action will be very deiicate, the slightest change in the speed of the engine causing a movement of.

the valve member and the consequent ripening or closing of the intake. 1'

It will be noted also that the entire mechanism is completely inclosed in an air tight manner whereby there is no interference in operation due to the entrance of air other than through the carbureter. This makes possible also the employment of ball bearings with an advantage which is easily understood.

It is obvious that many modifications may be made in the construction shown and such modifications as are within the scope of my claims I considerwithin the spirit of-my invention. I Iclaim: I. Y

In anengine'governoqthe combination or" a casing provided with a conduit of varying cross sectional area, a disk mounted HI/ said conduit, a throttle valve, said valve controlling an intake opening, a connection between said disk and said valve, the open irtiig and closing of said intake assagebeing' e e cted automatically to a egree corresponding to the increase or decrease of the effective area of the conduit surrounding said disk, substantially as described. 2. In an engine overnor, the combination of a casing provi ng a conduit of varying cross sectional area, a governing disk centered within said conduit and adapted for longitudinal movement with relation thereto, a valve controllin a triangular inlet opening, and a connection between said disk and said valve whereby said intake opening is opened or closed in the ratio of the increase or reduction of effective area in the conduit surrounding said disk, substantially as described.

3. In an engine governor, the combination of a casing providing a conduit of varying cross sectional area, a governing disk centered within said conduit and adapted for longitudinal movement with relation thereto, a valve controlling a triangular inlet opening, and a positive connection between said disk and said valve whereby said intake opening is opened or closed in the ratio of the increase or reduction of effective area in the conduit surrounding said disk, substantially as described.

4. In an engine governor, the combinationof a casing providing a conduit of Varying cross sectionalarea, a disk centered within said conduit and adapted for longitudinal movement therein, an arcuate valve member mounted for rotation on a shaft within said casing, said valve and disk being interconnected, said valve controlling a V-shaped opening, and ineans for manually closing said valve, substantially as described.

5. In a governor, a casing providing a conduit of varying cross sectional area, a disk centered within said conduit and adapted for longitudinal movement therein, .an

arcuate valve mounted for rotation within said casing, said valve controlling a V- shaped opening, a spring operatively connected to said valve, and means for adjusting the tension of said spring, the force of the incoming charge acting on said disk, tending to restrict said V-shaped opening against the tension of said spring, substantially as described.

6. In an engine governor, a casing providing a conduit of varying cross sectional area, a disk centered within said conduit and adapted for longitudinal movement therein,

a. valve member mounted for .rotationon. .a shaft within said casing, said valve and-disk being inter-connected, said valve controlling a V-shaped opening, means tor manually moving said valve to close said V-shaped opening, said valve being operated to \mcover said V-shaped opening by other than said manually operable means, substantially as described.

.Z.. In an engine overnor, the combination of a casing provi mg a conduit of varying cross sectional area, a disk centered within said conduit and adapted for longitudinal movement. therein, a valve member mounted for rotation on a shaft within said casing, said valve and disk being inter-connecte said valve controlling a V-sha ed inlet space, spring means normally ten ing to rotate said valve member and uncover said V- shaped space in opposition to the force exmovement therein, a valve mounted on a shaft w thin said casing andgadapted tocontrol an intake .0 ening, a spring connected to sa1d valve mem er,- means for adjusting the tension 'of said spring, a cap for covering connecting said disk and'said throttle valve,

the extent of openin of said valve being determined by the position of the disk in the conduit, and positive, manually operable means associated with .said throttle and adapted to act only to force said throttle toward its closed position, substantially as described.

BENJAMIN e; KRAMER.

Witnesses:

FRANK E. Dnnnm'r. Ennn- PALM. 

